Adjusting Fast Idle Cam (Throttle Opening Angle)

Set fast idle cam on second highest position. Measure between primary throttle valve and throttle bore. See Fig 2 . If clearance is not .033-.041" (0.84-1.04 mm), turn fast idle adjusting screw as necessary.

Fig 1: Adjusting Choke Pull-Off Diaphragm

Courtesy of MAZDA MOTORS CORP.

Fig 2: Adjusting Fast Idle Cam (Throttle Valve Angle)

Courtesy of MAZDA MOTORS CORP.